I've wasting my time to do check every single frequency that can reach for 2 miles but the result..... none of the frequency can be reachable I've wasting my time to do check every single frequency that can reach for 2 miles but the result..... none of the frequency can be reachable

The problem is, i'm working in oil & gas industry. I try to use the radio at module 5 (me) to module 6 (colegue). Its about 400m. And... my location is top of the column and same with my collegue. The result still the same. Sorry coz I've comment a lot. I'm really fanatic to motorola product. The problem is, i'm working in oil & gas industry. I try to use the radio at module 5 (me) to module 6 (colegue). Its about 400m. And... my location is top of the column and same with my collegue. The result still the same. Sorry coz I've comment a lot. I'm really fanatic to motorola product.

The range that you can expect to see when using two-way radios is very dependent on local conditions. These radios are very line-of-sight dependent. Obstructions like mountains, hills, tall buildings, thick vegetation, and using the radio in a shielded environment such as inside of an automobile can block your line of sight and limit your effective communications range.

That “maximum 5 mile” advertised range is probably only practical in a situation where the user of one of the radios has some significant elevation (such as being on top of a tall hill) and therefore has increased line of sight. When communicating over relatively level ground that is clear of obstructions, you can probably expect a reliable communications range of about a mile.

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The two radios share no frequencies in common. The T5720 has the US frequencies classified as FRS and GMRS, between 462-467 MHz. The T5422 has the UK frequencies classified as PMR and dPMR which are in the 446 MHz range.

Handheld radios generally will talk "radio-to-radio", "line-of-sight" up to 2 miles. Once you start putting obstacles in between the radios you will shorten your range.

Advertising literature will sometimes give numbers such as "5 mile range". While this is possible in ideal conditions, it is not common in real-world situations. HEIGHT and PLACEMENT of the antenna determines the range of the radio. Example: Talking from a mountaintop you could talk far into a valley below, much further than the expected 2 miles. However, if you were to be in an congested city, you may only be able to talk a single city block due to obstacles.

To get the best range, use a well charged battery pack, wear your radio high on your body, and always hold the antenna perpendicular to the ground when using the radio.

The frequency range and operatngmode of the two radios are compatible. To get the Radius operating on a GMRS channel you'll need a Motorola programming cable and software, OR a trip to a Motorola dealer for frequency programming. Considering the cost involved, the 2-watt output of the Radius, and the 1-watt output of the Talkabout, you would be better off performance and cost wise buying a pair of 5-watt GMRS portables. BillB

Generally speaking a 2-way radio will talk as far as it can see. Height and placement of antenna determines range. So if you were talking from a Mountain to a valley you could talk a great distance. However, in the real world there are obstacles, such as trees, houses, varied terrain. You generally would expect a radio to talk line-of-sight up to two miles. Or 1/4 to 1/2 mile if talking from inside a building to outside. The quote of 5 miles in literature is referencing ideal conditions. (Much like when the new car you are looking at quotes the MPG.)

Hello cataway43,These type of low power handhelds are good for "line of sight" communications and their range is very dependant on local geography. Over level ground with no obstructions you can expect about a mile of effective communications range, on average. If you are operating in an area with decreased line of site due to obstructions such as tall buildings or heavy vegetation then the range will be decreased; likewise if you are in an area with increased line of site (such as on top of a tall hill or mountain) you can expect increased range.Best Regards,Ken"Go Ahead. Use Us."

The frequencies in the TalkAbout T5720 are not adjustable. The radio operates on the designated Family Radio Service channels located at 462 and 467 MHz. There is no way to change these channels to be at 463 and 464 MHz.